Needle for knitting-machines



W. W. BURSON.

NEEDLE FOR KNITTING MACHINES.

APPLICATION FILED AUG. 4, 1917.

1,391,043, PatentedSept. 20, 1921.

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NEEDLE FOB KNITTING-MACHINES.

Specification of Letters Patent. Patent d t, 20, 1 2

Application filed August 4, 1917. Serial No. 184,408.

To all whom it may concern: 5

Be it known that I, WILSON W. Benson, a citizen of the United States, residing in Rockford, in the county of Winnebago and State of Illinois, have invented a new and useful Improvement in Needles for Knitting-Machines, of which the following is a specification. r

This invention relates in general to needles provided for knitting machines.

A principalobjectof the invention is to provide a needle for the foregoing and like uses of more certain and efiicient o eration than has been heretofore usual an at the same time requiring less space on the cam carrying bar and thereby reducing the amountof space required by a single set of cams and enabling in some machines the use of a pluralit of sets of cams in the place of the one so t at the machine may knit more than a single thread at each passage of the cam car ing bar. v

A furt er object of the invention is to provide a needle which may be used in place of the latch needle and may be made of smaller dimensions and consequently adapted for the knitting of finer yarn.

A still further object of the invention is the provision of a needle for knitting machines which may be cheaply constructed and lar e1 by punch and die work.

A stil urther object of the invention is the provision of a needle for accomplishing the foregoing Wll kee the 01 and the new loops separated eflgctively and which will possess no tendency to catch in the yarn or other material bein knitted.

A still rther object of the invention is the provision of a knitting needle of the character described, which will present a relatively small part for insertion within the loops and consequently permit'the knittin of closely knitted ods.

her obi'ects-anda vantages of the invention wil be a parent as'it is better understood from t e following description when considered in connection with the accompanying drawin illustrating a preferred embodiment t ereof.

On the drawing, 4

Figure 1 is a side elevation of a knitting needle embod ing my present invention with the needle be, shownin section and the knit-' and other, objects, whichting needle extended to pick up the yarn for a new loop;

Fig. 2 is a similar view showing arrangement of the parts as they'near the complet1on of the knitting stroke;

Fig. 3 is a top plan view of the part shown in Fig. 2;

2 F1g(i 4. is a section on the line 4-4 of Fig. an

Fig. 5 is a section on the line 5-5 of Fig 2. 4 n

he knitting needle shown on the drawmg for the purposes of illustrating the 'embodunent of my present invention comprises a knitting hoo member and a lifting h'ooli member connected together by a pair of rocking arms which, as the knitting hook member reclprocates, serve to en age the old loops and lift them up over an oil of the knitting hook while it is carrying the new locips. v

eference character 11 indicates generally the knitting hook member and reference character 12 the liftingwhook member. The lower edge 13 of the knitting hook member 18 preferabl flat and slides back and forth on the nee e bed 14. Thi s.sliding is imparted by the needle jack 15, only a part of which is shown on the drawing, this jack having the usual engagement at 16 withthe knitting hook arm or member at the rear end. At the operative end the knitting hook pnper 17 is provided, this hookcon an overturned lip as shown on the sisting o drawlng. Rearwardly of the book 17 the needle arm or member is substantially strai ht providing anupper edge or surface 18 a ong which the loops may slide from forming to lifting position. At the rear end of this part avdepression 19 is provided to receiveth'e lifting hook and it will be observed that the hfting hook proper, which is indicated at 21, seats in this recess so that .the loop may slide over and above it without danger of catching in the hookend. The hook members are mounted one above the otherthat is to say, in the'present embodiment of the'invention the lifting hook member is dis osed above the knitting hook memberv and t e two are connected together by guides or rocking'arms- 22,- one of which is located on each side of the two. The guides or rocking arms are pivotall connected at 23 with the lifting hook mem r and at 24 with the knitting hook member. The knitting hook member is provided with an upstanding ing in which is located'the pivotal connection 24 between the guides or rocking arms and the knitting hook. The lifting hook member preferably consistsof a flat strip of suitable material having an n wardly projecting part 26 near its front en in which the pivotal connection 23 is located, and a downwardly extending art 27 which terminates in the hook 21. The parts 26 and 27 of the liftin hook member are preferably such that t ey form a recess 28 in which the lug 25 may move, the pivot 23 being preferably located normally behind thepivot 24.

The body 29 of the lifting hook member extends along the top of the knitting hook member and its rear end 31 is turned back and formed into a spring to enga e the side walls 32 of the needle channel. T e body 29 of the lifting hook member is rovided with a recess 33, the ends of whicli form stops adapted for engagement by'an upstanding stop 34' of the knitting hook member and extending into the recess 33.

Each pivotal connection 23 and 24 is formed of a rivet 35 which extends through an aperture 36 in the centrally connected part, this aperture having flaring ends in which the guides or rockin arms forming the outer parts of the pivota connection are depressed, the ends of the rivet being riveted down and disposed wholly within the outer surfaces of the guides 22. These surfaces may be made smooth, if desired, by grinding after the riveting. In order that the parts may have the desired easy relative movement the aperture for the rlvets is formed in a central bearing 30, which is preferably of length minutely greater than the thickness of the hook members. In the operation of the needle the knitting hook is projected to engage the yarn and on its return a knitting movement carries the yarn with it forming the new loop 41. This loop slides back over the surface of the knitting hook when the knitting hook is again projected arriving against the downwardly extendin part 27 of the lifting hook member after t e lifting hook has passed under the yarn to form the next successive loop. This position of the loop is indicated at 42 and for the purposes of explanation may now be called the old Y loop since a new loop 41 is in the process of formation. On the next return or knit tin stroke, the hook 17 carries the yarn bac formin a new. loop and the hook 21 is lifted by t e movement of the guides or pivot arms up over and beyond the inturned end of the knitting hook so that a further rearward movement of the needle causes the. old loo 42 to drop from the knittin needle and over the new loop 41 which as just been formed. The relative movements of the hook .members are deterrangement of the the ends of the slot 33 which occurs near the ends of the forward and knitting strokes. During the parts of the stroke between these stop engagements the lifting hook member is swun about the spring as a fulcrum by the roc ing arms or guides 22 lifting the old loop over the new and returning the lifting hook to receiving position. The movements are so timed that the lifting hook is disposed in its slot at the time the needle hook reaches the end of its forward stroke and picks up the new yarn. As the knitting hook starts back on its knitting stroke the lifting hook starts up since the stop 34 moves out of engagement with the forward end of the slot 33. The hooks are in the arrangement shown in Fig. 2 when this stop engages the rear end of the slot and so engaged the two parts move together back to the end of the rear or knitting stroke. Upon starting upon thenext forward stroke the stop 34 leaves the rear end of the slot and the lifting arm moves back to its normal or inoperative position arriving at the position shown in Fig. 1 before the loop 42 slides over the recess 19.

It will be manifest. from the foregoing that the parts are kept in accurate register by the separate guide members provided and since the hook members are positioned between these guides they may be very small and thin since it is not necessary that any direct connection between them be provided. It will also be manifest-from the foregoing that the old loop is positively and accurately lifted over the new and v without danger of catching the yarn or tangling the loops. The necessary sliding movement is greatly reduced and the necessary cam throw consequently less so that more cams can be utilized in a given space on the cam body. The part of the needle thrust through the loops may be small and closely knitted goods made therefore by this needle.

It is thought that the invention and many of its attendant advantages will be under stood from the foregoing description, and it willbe apparent that various changes may be made in the form, construction and ararts without departing fromthe spirit and scope of the invention or sacrificing all of its material advantages, the form v hereinbefore described being melrellya preferred embodiment thereof.

c aim:

1. A needle for knitting machines, coinpivot arm lifting the lifting hook as the knitting hook moves on its knitting stroke to raise the old loop above and over the new.

2. A needle'for knitting machines, comprising a knitting hook, a lifting hook, an arm pivotally connected to each of said hooks, and means for restraining movement of said lifting hook with said knitting hook to cause said lifting hook to be lifted by said arm ata predetermined portion of the cycle of knitting operation.

3. A needle for knitting machines, com prising a lifting hook member and a knitting hook member of substantially the same thickness and mounted one above the other, and movable guides near the hooks of said hook members for retaining said hook members in proper relation,

4. A needle'for knitting machines, comprising a lifting hook member and a knitting hook member arranged one above the other, and guides located near the hooks of said hook members and pivoted to said members for retaining said hook members in proper relation.

5. A needle for knitting machines, comprising a lifting hook member and a knitting hook member arranged one above the other,

and guides pivotedto said hook members for retaining said hook members in proper relation.

6. In a needle for knitting machines, a rivet pivotally connecting a central-part to two outer parts, said central part being provided with an aperture with flaring ends and said outer parts being depressed into said flaring ends of said aperture, a rivet engaging said outer parts and a latch member pivoted on said central part.

7. A needle for knitting machines, comprising a knittin hook member and lifting hook member said knitting hook having a straight line reciprocation in knitting and said lifting hook member having a movement composed of two movements about points located respectively one adjacent to the hook and the other remote therefrom.

8. A needle for knitting machines, comprising a lifting hook member and a knitting hook member of substantially the same thickness and mounted one above the other, and guides secured to both said members and near the hook for retaining said hook members in proper relation.

, 9. In a needle for knittingmachines, a central and two outer parts, said outer parts being pivotally connected to said central part, a pivot member located within said central part and engagingthe inner faces of said outer parts and a rivet through said outer parts and through said pivot member for holding said pivot member in place.

Signed in the presence of two subscribing witnesses.

WILSON WORTH BURSON. Witnesses:

A. J DOYLE, RALPH C. KRIEOHBAUI. 

